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    HIGH ZIRCONIA FUSED CAST REFRACTORY
    27.
    发明公开
    HIGH ZIRCONIA FUSED CAST REFRACTORY 有权
    高锆石融合铸造耐火材料

    公开(公告)号：EP2956428A1

    公开(公告)日：2015-12-23

    申请号：EP14814670.7

    申请日：2014-08-14

    申请人： Saint-Gobain TM K.K.

    发明人： KUBOKI Toshimitsu ,  SUGIYAMA Hiroshi ,  MISU Yasuo ,  HASHIMOTO Itaru

    IPC分类号： C04B35/657 ,  C03B5/43 ,  C04B35/48 ,  F27B14/10 ,  F27D1/00

    CPC分类号： C04B35/49 ,  C03B5/43 ,  C04B35/48 ,  C04B35/484 ,  C04B35/657 ,  C04B2235/3201 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/3232 ,  C04B2235/327 ,  C04B2235/3272 ,  C04B2235/3281 ,  C04B2235/3293 ,  C04B2235/34 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/72 ,  F27B14/10 ,  F27D1/00 ,  F27D1/0006 ,  F27D1/16

    摘要： To provide a high zirconia fused cast refractory that suffers less cracks in production and on heating, has excellent productivity, is hard to form zircon crystals with the refractory solely and under conditions where the refractory is in contact with molten glass, is hard to suffer cracks on receiving heat cycles in operation of a glass melting furnace, and has durability for a prolonged period of time. [Solution to Problems] A high zirconia fused cast refractory containing, as chemical components, from 85 to 95% by weight of Zr0
    2 , from 0.4 to 2.5% by weight of A1
    2 0
    3 , from 3.5 to 10% by weight of Si0
    2 , from 0.05 to 1% by weight in total of Na
    2 0 and K
    2 0, more than 0.04% by weight and 1% by weight or less of Β
    2 0
    3 , 0.02% by weight or less of P
    2 0
    5 , 0.05% by weight or less of MgO, from 0.01 to 0.2% by weight of CaO, in the case where any one of SrO and BaO is contained, from 0.3 to 3% by weight of SrO or more than 0.5% by weight and 3% by weight or less of BaO, and in the case where both of them are contained, 0.3% by weight or more of SrO and from 0.3 to 3% by weight in total of SrO and BaO, from 0.01 to 0.7% by weight of Sn0
    2 , and 0.3% by weight or less in total of Fe
    2 0
    3 and Ti0
    2 .

    摘要翻译： 为了提供在生产和加热中具有较少裂缝的高氧化锆熔铸耐火材料，具有优异的生产率，难以单独地与耐火材料形成锆石晶体，并且在耐火材料与熔融玻璃接触的条件下，难以产生裂纹 在玻璃熔炉操作中接受热循环，并且具有长时间的耐久性。 [问题的解决方案]一种高氧化锆电熔耐火材料，其含有作为化学成分的85至95重量％的ZrO 2，0.4至2.5重量％的Al 2 O 3，3.5至10重量％的SiO 2 ，Na 2 O和K 20总计为0.05〜1重量％，超过0.04重量％且B 2 O 3为1重量％以下，P 2 O 5为0.02重量％以下，0.05重量％ 或更少的MgO，含有SrO和BaO中的任何一种的情况下CaO为0.01-0.2重量％，SrO为0.3-3重量％或大于0.5重量％和3重量％或 BaO少，在含有它们两者的情况下，含有SrO 0.3重量％以上，SrO和BaO合计0.3〜3重量％，SnO 2 0.01〜0.7重量％， Fe 2 O 3和TiO 2的合计为0.3重量％以下。